Combined with the American belief that anyone can make it, evidence that some people are moving up suggests that if I am not doing well, it is my fault.
Combined with our model, this evidence suggests that speculative bubbles were an important factor driving prices in cities with boom-bust cycles.
结合我们的模型，这方面的证据表明，这些投机泡沫是驱动城市房价从繁荣到萧条循环的一个重要因素。
3
This evidence, combined with our understanding about the basic biology of cloning, would support the conclusion that food from clones or their offspring is safe to eat.